26615420 has 24 divisors (see below), whose sum is σ = 60192384. Its totient is φ = 9827136.

The previous prime is 26615383. The next prime is 26615441. The reversal of 26615420 is 2451662.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 26615420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50924 + ... + 51443.

It is an arithmetic number, because the mean of its divisors is an integer number (2508016).

Almost surely, 2^26615420 is an apocalyptic number.

26615420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26615420 is an abundant number, since it is smaller than the sum of its proper divisors (33576964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26615420 is a wasteful number, since it uses less digits than its factorization.

26615420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102389 (or 102387 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 26615420 is about 5159.0134715854. The cubic root of 26615420 is about 298.5688128313.

The spelling of 26615420 in words is "twenty-six million, six hundred fifteen thousand, four hundred twenty".